Gas offtake apparatus



y 933- w. J. B. LEECH ET AL,

GAS OFFTAKE APPARATUS Filed Aug. 19, 1929 3. Sheets-Sheet 1 A fro/Mfr July 25, 1933. w. J. B. LEECH ET AL 1,919,955

GAS OFFTAKE APPARATUS Filed Aug. 19, 1929 SSheets-Sheet 2 ATTORNEY y 33 w. J. B. LEECH Er AL 1,919,955

GAS OFFTAKE APPARATUS Filed Aug. 19, 1929 3Sheets-Sheet 5 l V I III/III,

applied to a hydraulic main of a plant for 'vention.

patent above referred to then the dip-pipe itself may be operated to effect the opening or closing or partial opening or clos ng of .the opening or openings in the d p-pipeor the closure member may be operatedby the mechanical means in accordance with the descriptionin the prior specification afore said. I Z

' In orderthat the invention may be clearly understood and readily'carriedinto effect, reference is made to the accompanying drawings which show chagrammatically and by way of example constructions of dipplpes 1n accordance. Wltll the present n- Figure 1 is an elevation of a liquid seal use in the manufacture of coal gas. a

Figure 2 is-a sectional plan on' the line 2-2, Figure 1. 1 .Figure 3 drawn to an 'enlargeil'scaleis a sectional elevation of the lower part of ably supported in ahousing-l i enlargement of the 'dip-pip'e 1. Suitably Figure 1.

F gure 4 is a sectional plan on the line 3 3 Figure 3.

; "Figure 5' is a sectional elevation at'riglit" angles to that shown in Figure 3.

Figure 6 is a sect onal elevation ofa modi fied constructional form. p

- Figure 7 shows a vertical section f. a

invention as. applied to a coke oven collect- Figure 8 is a crosssection on the line S--8 Figure 7.

Referring-to Figures 1 to 5 both inclusive, 1, Is the dip-plpe having one or morethan one opening2 in the thickness ,of the pipe. In the drawings foursuch openings. are

rounding the-dip-pipe is a closure member 6' to, which is attached a rod 7'carrying at its upper end a lever 8.. The lever S-is provided with a plurality of holes 9, and can ries a weight 10 adjustable .alongthe lever 8. The lever 8 in Figure 1 iswprefe'rably formed in two the parts, i 8,... 11, one of "which part 1.1 is pivotally connected to the rod 7 as at :12, and the outer-end of the lever 11 is rigidly secured'to apivot pin 13 rocle secured to the lever8 is a manipulating rod .15. The member 6 as will be seen more partlcularlyfrom Figures 1,, 3 and 5 is dis posed outside the dip-pipe 1' but such mem ber may-be disposediinside the dip-pipe 1 as found. more convenient. {Each opening is of such an areathat when-the member. 6.

forming an' is in its lowest position the maximum amount of opening is provided for the escape of gas immediately after charging the .conicity. As shown in the drawings the.

openings. are partly rectangular and partly triangular but it-should be clearly understood'that the opening as well as the width to suit therequirementsof anyparticular type of coal to be subjected to carbonization. Theactualshape, length and width of each opening. either of its triangular porcanbe pi'edetern iined by testing a sample of the coal whi'chis to be carbonized, and ascertaming the quantityot gas given off durlng the early stages ofv gasification. Obviously the lever-8,01 therod15 instead of being 5 operated 'by handmay, be provided at its lower [endwith aroller which maybe ac tuated by cam mechanism in accordance with the method and means described and claimedin prior British Patent No. 302437 dated 6th October 1927. here the lever .8 and rod 15 are manually operated then the escape of the gas evolved in the retort is dependent on the, manual-operation-of either dipepipe 1 would control the pressure in the shown, see Figure 2, these openings febeillg'i numbered respectivelyil, 8,4, and 5. Stir-- trol the. pressure in the retort by releasing the pressure therein by manually operating the lever.8 and/or rod 15 or the latter or the lever8 may be mechanically operated so i and the converging conicity can be varied tion or of its rectangular portion or both that the movement of the dip-pipe 1 or the displaceable me1'nber6 governs the escape of gases from-, the retort in a predetermined manner The rod 7 is connected to the dis placeable member 6 by means oftwo short rods 16,17, the outer ends of which are securedinthe displaceable member 6 and passed throughslots 18, '19, in the dip-pipe the short rods 116,17, being connected or. U =coupled together by a length of tubing or ."gas piping; 20 through which the rod 7 pas-sesand is connected thereto by a nut 21 engaging the corresponding screw-threaded lower end of the rod 7.

In. Figure 6,.the member6 is shown as beingninside the dip-pipejl'flin which arrangement the slots 18', 19,015 F igure 3*are unnecessary. The construction, however rec mainsapproximatelythesame; i r In this 0011-;

' to a flange26 on the 'casing 23. The cover 7 ingthe. projecting annulus, 27 I, end of the spring is adj'ustably maintained'j in positionby a collar 29'whichis adjustable; on; the rod 8 and'capable oi being-clamped:

struction however 'ai'modifie'd formi o'fimw pu a ing rod is shown such :i-i'or showing the lever- 8 provided: with} a spherical per-: tlon 22 which ishoused nfa; casing 23 and "seats against an arcuate edge 2 lprovided" in a cover plate- 25 whiclris suitablyfsecured plate 25 is provided preferably with a slight outward projecting annulusx 27 formingv a guide or support for a spring 28 surround thereon by two setiscrews3031. Thecover *platef2-3 is provided with ribs sit-ending. in the directionof moven'lent of the-lever 8 Between the ribs 32, which'also act as guides the cover plate 28 "is of arcuatelform asa't 33 the centre of the curveybeing. b o-incident 1' I with the centre-of the spherical portion 22; I A cap 34 .formed in one with the annulus 27 and of a form corresponding itothat; of

the arcuate part 33 surrounds the lever 8 and acts as a steadying device for the move- 1 ment of the lever 8. The latter may be made in one p ece or m'two or more pieces as found convement. 1

in" communication with a. coke fove'n, not

' showm- It" should} be clearly understood however that the pipe l' may be rigidlysecured tothe pipe'35 instead of. being cast in; one therewith, In Figures 1"and'4,='four j lower end of the pipe 1 dips into a trough "openings are shown in the pipe 1 whereas in Figure 8, six openingsare shown. Any suitable number of openings may beused' however and these op'enings-1nay be ofany convenient shape to suit the purpose of the present invention. The closure' me1nber 6 in the construction shownin Figure 8 is carriedby threearms comprising solid rods 37 surrounded by tubular members 88the tubes being secured to the solid rods 37 as by pins 39 passing through the solid rods and thef tubes. The rods are extended at their outer ends to pass through slots such-as 18 in the pipe 1 and these outer ends of the-r0d 37 are suitably secured .to theclosuremember 6.

The-pipe 1 is suitably secured 'to the' cover 40 of a coke oven" collecting miner and. the

or tray 4c2-mounted on alever arm 48 which is tiltablysupported on a rockable pin 44 secured in a housing 45. The latter is sevention. The

The outer ings. V

gas offtake apparatus including in cured fany= suitable means to; the casing 46 ot 'the cellecting or} 1 ydraulic"1nain 41 The'closure member 6 inLFigure 7 is' raised and: lowered by .a screw-threaded rod: 47 which passes through 'a -,;correspondingly' ,screw-threadedboss 48 on. a hand wheel-49.

50 is a bracket interposed between the hand wheel4;?)andJthe'upper partfof the pipe the bracket howeverbeing secured to 1 the pip 2 51 is thesnsual spraying nozzle and forms no part itself of the present in closure raised and lowered by any suitable means. What we claim is 1. Agas-oiftake apparatus including in combinatijonla gas collecting main, ;'a dip member may be pipe extending downwardly. into the collect-s ing mainland formed in the lower portion f thereof' 'with a .plurality'of openings, a member openateach end and in slidable con-- tact and movable relatively tot-he dippip'e, the contact between the slidable member and the dip pipe being suflic'iently close to effect: direct bafliing of 'thelopenings in the dip pipe in whole orin'part5 and means to-inovei the slidable member relatively. tothe dip,

pipe in orderto control directly theescape of gas through'the said openings.

2. A gas .ofi'take apparatus'including in combination a gas collecting main, a dip pipefextending downwardly'into the collect- 7 'ing main and formed with a plurality .of

openings in the lower portion thereof a member open at each end and in approxi n ate contact with and slidable within-the dippipe and directly bafiling the said open *ings in" whole or inpart when iii-selected positions inthe "dipf pipe, and manually operable means tomove the member relativelyto the dip pipe and to the said opencombinationija gascollecting main, a dip. i

pipe extending downwardlylinto the col1ectmg ma111,:saidd1p pipe being formed with v 1 7 openings-in the wall thereof having a combined area at least substantially equal to or greater than: the-transverse area of the dip pipe, a tubular memberslidablycooperating -With thedip'pipeand movable to a'position to partially orvcompletely bafiie the openings in the-- dip pipe, radlally arranged arms} carried ,bythe tubular memberand project-v ing within the dip pipe, a manually operable lever, and means connecting saidlarm and lever to cause operationoi the. tubular n eniber 1n the actuatlon of the lever.

r 4. A gas fofi'take apparatus including in combination v a gas collecting main, a gdip p pe extending downwardly into the collect-Q ing na n, said dipplpe be ng formed with openings inthe wall thereof having a combined areaat least substantially equal to or greater than the transverse area ofthe dip pipe, a tubular member slidably cooperl atiihg with; dip pipe ahd movibie to positionto partially FF-completely b flle the WILLIAM JAMES ,BEAVERITLEVECH.

of fluid =theiethrugh and regulating. the

pressure 1n fihe gas collectmg mam.

5. Av construct on as definedln clzum 4:,

wherein the openingsrare' of varying dimerh sions vertically.

6. Ahonstrucitionj as defined in claim 4, whereln the OPGIllllgS areof unlform dlmenslons for a portion of then" length and of gradually decreasing dimensions vertically fo'xythe remaindefof their length.

STEPHEN'HAY. -h HAROLDHOLLINGS.

ALBERT EDWIN BURTON. 

